﴿ وَهُوَ ٱلْقَاهِرُ فَوْقَ عِبَادِهِۦ ۖ وَيُرْسِلُ عَلَيْكُمْ حَفَظَةً حَتَّىٰٓ إِذَا جَآءَ أَحَدَكُمُ ٱلْمَوْتُ تَوَفَّتْهُ رُسُلُنَا وَهُمْ لَا يُفَرِّطُونَ ﴾

“And He alone holds sway over His servants. And He sends forth heavenly forces to watch over you until, when death approaches any of you, Our messengers cause him to die: and they do not overlook [anyone].”

Please check ayah 6:62 for complete tafsir.